US looking into possible chemical attack in Syria

A handout picture released by the official Syrian Arab News Agency (SANA) on April 21, 2014 shows Syrians holding their national flags and a portrait of President Bashar al-Assad during a rally to show him their support in Damascus' Halboon neighborhood. Syria announced today it will hold a June 3 presidential election, which is expected to return Bashar al-Assad to office despite a civil war that has cost tens of thousands of lives. AFP PHOTO/HO/SANA === RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT 'AFP PHOTO/HO/SANA' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS ===-/AFP/Getty Images